"It's cool to be able to put together a tour that's all our friends," Patrick Stump explains. "Gym Class are obviously our buddies, and De'Mar [Hamilton] from Plain White T's—I've known that kid since I was 14."

Stump also gave fans a quick rundown of his upcoming projects as a producer, citing both Cobra Starship and Gym Class Heroes as artists whom he's partnered with. And in case any of you've forgotten, Stump linked up with "this kid Tyga" on the 2008 song "Don't Regret It Now."